Stocks to Watch: CAT, FB, AAPL & More

Caterpillar - The heavy-equipment maker updated its 2015 earnings forecast to between $12 a share and $18 a share and revenue to between $80 billion and $100 billion.

"Just as we have done in the past, Caterpillar is ready to act if we enter a recession," said CEO Doug Oberhelman in a press release. "We don't think it's likely, but if it happens, we are prepared to react and would expect to remain attractively profitable and to maintain our dividend."

Pandora - Nomura initiated coverage of the Internet radio operator with a "reduce" rating and a price target of $8.50. (Click here for after-hours quote.)

Red Hat - The software company posted earnings of 28 cents a share, excluding one-time items, on revenue of $323 million. Analysts expected the company to post earnings of 29 cents a share on revenue of $322 million. Shares tumbled in extended-hours trading. (Click here for after-hours quote.)

Paychex - The payroll and human resource service company posted earnings of 42 cents a share, edging past expectations for 41 cents a share. But the firm reported a lighter-than-expected revenue at $578 million versus expectations for $584 million. Shares wobbled in extended-hours trading. (Click here for after-hours quote.)